1 /* $NetBSD: scsi_all.h,v 1.18 2001/05/14 20:35:28 bouyer Exp $ */ 2 3 /* 4 * SCSI-specific interface description. 5 */ 6 7 /* 8 * Largely written by Julian Elischer (julian@tfs.com) 9 * for TRW Financial Systems. 10 * 11 * TRW Financial Systems, in accordance with their agreement with Carnegie 12 * Mellon University, makes this software available to CMU to distribute 13 * or use in any manner that they see fit as long as this message is kept with 14 * the software. For this reason TFS also grants any other persons or 15 * organisations permission to use or modify this software. 16 * 17 * TFS supplies this software to be publicly redistributed 18 * on the understanding that TFS is not responsible for the correct 19 * functioning of this software in any circumstances. 20 * 21 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 22 */ 23 24 /* 25 * SCSI command format 26 */ 27 28 /* 29 * Define dome bits that are in ALL (or a lot of) scsi commands 30 */ 31 #define SCSI_CTL_LINK 0x01 32 #define SCSI_CTL_FLAG 0x02 33 #define SCSI_CTL_VENDOR 0xC0 34 35 36 /* 37 * Some old SCSI devices need the LUN to be set in the top 3 bits of the 38 * second byte of the CDB. 39 */ 40 #define SCSI_CMD_LUN_MASK 0xe0 41 #define SCSI_CMD_LUN_SHIFT 5 42 43 /* 44 * XXX 45 * Actually some SCSI driver expects this structure to be 12 bytes, so 46 * don't change it unless you really know what you are doing 47 */ 48 49 struct scsi_generic { 50 u_int8_t opcode; 51 u_int8_t bytes[11]; 52 }; 53 54 /* XXX Is this a command ? What's its opcode ? */ 55 struct scsi_send_diag { 56 u_int8_t opcode; 57 u_int8_t byte2; 58 #define SSD_UOL 0x01 59 #define SSD_DOL 0x02 60 #define SSD_SELFTEST 0x04 61 #define SSD_PF 0x10 62 u_int8_t unused[1]; 63 u_int8_t paramlen[2]; 64 u_int8_t control; 65 }; 66 67 #define SCSI_RESERVE 0x16 68 struct scsi_reserve { 69 u_int8_t opcode; 70 u_int8_t byte2; 71 u_int8_t unused[2]; 72 u_int8_t length; 73 u_int8_t control; 74 }; 75 76 #define SCSI_RELEASE 0x17 77 struct scsi_release { 78 u_int8_t opcode; 79 u_int8_t byte2; 80 u_int8_t unused[2]; 81 u_int8_t length; 82 u_int8_t control; 83 }; 84 85 #define SCSI_CHANGE_DEFINITION 0x40 86 struct scsi_changedef { 87 u_int8_t opcode; 88 u_int8_t byte2; 89 u_int8_t unused1; 90 u_int8_t how; 91 u_int8_t unused[4]; 92 u_int8_t datalen; 93 u_int8_t control; 94 }; 95 #define SC_SCSI_1 0x01 96 #define SC_SCSI_2 0x03 97 98 /* block descriptor, for mode sense/mode select */ 99 struct scsi_blk_desc { 100 u_int8_t density; 101 u_int8_t nblocks[3]; 102 u_int8_t reserved; 103 u_int8_t blklen[3]; 104 }; 105 106 /* 107 * Status Byte 108 */ 109 #define SCSI_OK 0x00 110 #define SCSI_CHECK 0x02 111 #define SCSI_BUSY 0x08 112 #define SCSI_INTERM 0x10 113 #define SCSI_RESV_CONFLICT 0x18 114 #define SCSI_TERMINATED 0x22 115 #define SCSI_QUEUE_FULL 0x28 116 #define SCSI_ACA_ACTIVE 0x30 117